# NTSB Accident WPR13CA107
> **ROBINSON R22** · 2013-01-30 · Kona, HI, USA · NONE
## Event
- **NTSB number:** WPR13CA107
- **Event ID:** 20130130X01030
- **Type:** Accident
- **Date:** 2013-01-30
- **Location:** Kona, HI, USA
- **Coordinates:** 19.630725, -155.99031
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** ROBINSON
- **Model:** R22
- **Registration:** N333PJ
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s failure to maintain adequate main rotor rpm during a practice autorotation and the flight instructor's delayed action, which resulted in a hard landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR13CA107) · AI Analytics · CC0 1.0*